Builder motion



Apri] ll, 1939. G. E. BRANCH BUILDER MOTION Filed March 17, 1938 3 Sheets-Sheet'l l .April 11 1939-' Gf E. BRANCH l 2,153,788

I BUILDER MOTION Filed March 17,. 1938 3 Sheets-Sheet 2 April 1l, 1939. G. E. BRANCH 2,153,788

BUILDER MOTION Filed March 17, 1958 5 Sheets-Sheet 3 I Patented V`.`ipr .1r1, 193e 2,153,788

um'irzp]s'l'ii'rss`{Pirrsu'r-v oFFlcs wam l 'norman Morton Guy n. amen, mwen, ma... .mgmt abbot Worsted' Company, Graniteville, Mass., a corporation of Massachusetts application mmh 17, 193s, No. 196,419.5. `19 (ci. 24e-43.7)

This invention relates to builder motions such as are used for winding yarn on bobbins and particularly to builder motions used in forming relatively large yarn packages- Some years ago,h ,Y

the trend turned toward the formation of larger yarn packages and this trend received an impetus due to the use of ring spinning instead Aof cap spinning franges. .l'he change, however, required a change in the builder motionhin order to give Y the required length of wind on these larger bobbins. To this end, the Scaife builder motion was adapted to the purpose, as disclosed in the patent to Chase, No. 2,013,876, granted September 10, 1935. However, various troubles developed in 'practice such as excessive wear, binding -of the parts and frequent breakage, and to remedy this the structure disclosed in the patent to West, No.

1,984,615, granted December 18,1934, was devel- Y oped. Later this was improved by the structure shown in the Banfield patent, No. 2,048,590, grant' ed July 21, 1930, where the movement of the ring rail was increased by the use of chains and pulleys of' different sizes. This reduced wear and break-.- age-but the cam throw had been reduced to such i', an'exnf. that `the slightest irregularity in the face of thev cam or the wear in the cam causing back lash in the reciprocating parts', was so ln litgliied that it was extremely difficult to produce a uniformly shaped bobb The general object of my invention i's to pro-v vide a builder motion which is not open to these objections, which is simple from a mechanical standpoint, and which has been found to be thoroughly effective for the purpose intended. More particularly, my object is Atoprcvide a builder motion for adouble headed bobbin with, a sovariation in thek length of traverse-to a minimum traverse about 1%," less than thelfull lengthof thebobbin.

' A further object is Y which -makes use of only one oscillating lever to transmit motion from the cam and eliminates to provide a builder motion entirely the screw, rack and gear arrangement- My invention is in the accompany- Fig..2 is an elevation of one end of the frame 6 showing the means for oscillating the actua lever. Fig. 3

of Fig. 1.A

Fig. 4 isa fragmentary front elevation'of a lo portion of a spinning Vframe showing a modi-v ned form of builder motion applied thereto. Y

Referring to these drawings and now more p articularly to Figs. 1, 2.and 3, Il designates a frame 15 element'supporting the usual ring rail II having thereon the usual rings I2 and travelers I3. The spindle rail Ilcarriesthe usual spindles I5 driven by whirls Ii and carrying the bobbins. B.' -The -v spindle'rail Il is mounted as usual upon the lifter 20 -rods I1 which pass through the fixed guide rail I8. lifter rods are reciprocated by chains I9 (only one of which is illustrated) passing over xed guide pulleys 2l and each connected to the vertically adjustable hooks 2| carried by arms 22 attached to the lower ends of the'lifter rods, the

'opposite ends o f the chains being attached to a traverse rod 23.

So far, asdescribed, the stroke is standard. that is, it is the structure commonly vfound in builder motions. Y

Guided in the slot 24 of a frameelement! is a slide Ziwhich is attached to the traverse rod 2s in any desired manner. As inustmtei'tne traverse rod has attached thereto the angle iron 2t andthe slide 25 is engaged Vtherewith by an 3g adjusting screw 21. Plvotally called variable wind on which the yam is wound in successiveA layers traversing the full length of Y the bobbin on the longest traverse with a gradual slide 'is an upstanding leveling lock 28 having` an upwardly and rearwardly inclined face 29. A

The rearface of the block has a rearwardlyextending arm 8l at its lower end and an adjust- 40 ingscrewllpassesthroughthearmll andbears` j x against the slide 2l. Thus'the leveling block 2l may be tiltably adjusted. 1 .downward from the frame element `Vt-'arethe supports or rbraces 32 whichcarryat 45 theirlowerends the plate or block 33.. v Pivotally mounted upon this block or plate is a lever Il.'

Preferably vthe plate or block -23 is vertically slot-, ted at II vand the pivot of the lever Il is' vertically adjustable in this slot for a purpose to so be lateirivotauy connected to the rear Y end' ofthejlever isla lever'llwhich at its upper end is curved rearward dr towards theface of the leveling block 2l and carries upon it the roller'llbearing against the face 2l of this block'. 55

is an enlargedsection on the 2-3 iiounted on Vthe The middle portion of this lever 31 is provided with a wear plate 39. For the purpose of oscillating the lever 31, I provide the cam 40 which is mounted upon a shaft 4| carrying the gear wheel 42 driven by a worm 43. This is the standard way of driving the cam 40. Slidingiy mounted upon a guide 44 is a slide 45 carrying at its forward endthe roller 45 against which the peripheral face of the cam 40 bears. This slide 45, as shown in Fig. 3, may be provided with a plurality of internally screw-threaded bores 41 shown as two in number in Fig. 3, and engageable with either one of these bores is the screw-threaded shank 48 of a yoke 49 which carries the roller 50 which bears against the wear plate 39. It will be obvious that as the cam 40 is rotated, the slide 45 will be reciprocated and this will give an oscillative motion to the lever 31, and this lever in turn bearing against the block 28 will give a reciprocating motion to the slide in the usual manner.

The lever 34, which is in the nature of a. walking beam, is oscillated by means of a crank arm I carried upon a shaft 52 (see Fig. 2) which shaft carries on it the pinion 53 driven by a gear wheel 54 in turn driven through reducing gears 55 and 55 from a worm 51. Shaft 52 is mounted in a bearing 58 on the frame end 59, the shaft being held in place by collars 59. 'I'he worm 43 is carried by a shaft 5I upon which is mounted a gear wheel 52 which meshes with a gear wheel 53 mounted on a shaft 54 which carries the belt wheel 55.

While I have illustrated a particular means for driving the gear wheel 54, I do not wish to be limited to this as other means might beused for this purpose. The crank arm 5| is longitudinally slotted at 55 and is connected to the lever 34 by means of a longitudinally adjustable connecting rod formed in three sections 51, 58 and 59, the section 59' The general operation-of builder motions ofthis character is well understood and, therefore, no general description of this operation is believed to be necessary, but the parts which particularly constitute my improvement function as follows:

As cam 49,; rotates, the slide-45 is reciprocated and gives a oscillating movement to lever 31 in turn reciprocating the chain rail or traverse rail 23 and vertically reciprocating the spindle rail i4 and the spindles. If this were all of theaction, the bobbins would be given the same length of stroke at all times and it is to vary the'length of the stroke so as to secure a taper of the bobbin at its upper end that I provide means for varying the point of contact or point of application of power to the lever 31. Thus if the lever 31 is lowered relative to the roller 53, the distance between the fulcrum 31' and theroller 59 will be increased and the stroke of lever 31 will be de creased. If, on the other hand. the lever 31 is v raised, the stroke of the lever will be increased.

' 'Ihe variation in thestroke of the lever 31 is secured by the gradual oscillation or the walking beam or supporting lever 34. As the crank 5I rotates, a slow rocking motion is imparted to this lever 34. This alternately raises and lowers the lever 31 which thus gradually diminishes and then increases the distance between its fulcrum 31I and the point of application of the roller 50.

A As the distance between the fulcruxn-31a and the roller 50 is increased, less traverse will be given to the slide 25 and less traverse will be given to the bobbins, and as the distance between the fulcrum of lever,31 and the roller 50 is decreased, a greater traverse will be given to the bobbin.

The leverages are so arranged that a maximum traverse of 7" can be secured with a minimum traverse of 53/4,H with the parts in the general position shown in Fig. 1. If the shank oi yoke 49 is shifted into the upper bore or hole 41 in the thrust block, then the traverse is changed to 6" maximum and 4%" minimum. Minor changes in traverse may be obtained by adjusting the pivot 35 for the lever 34 up or down in the slot 35, the length' of the connecting rod 51-59-59 being correspondingly changed so that the lever 34 is kept in a horizontal position when the cam 40 is at the center of its stroke. I'he adjustment of the wrist pin of crank arm 5I and slot 55 nearer to or further from the center of motion of the `crank arm determines the amount of movement of lever 34 and thus controls the difference in length between the maximum and minimum stroke, this difference being increased as the throw of the crank isincreased and vice versa.

In order that the difference in stroke shall come at the top of the bobbin to produce a taper at`the top and illl inat the base, the mechanism is ad,- justed as follows:

' .With cam'40 in the center of its stroke, that is, with the cam 40 in a vertical position, yoke 49 is adjusted toward or from the roller 45 by screwing the yoke 49 in or out. 'I'he yoke 49 is adjusted until the lever 31 is vertical at this point. When the point of cam 40 bearsagainst the roller 45, the bobbin will be brought to the upward limit of its traverse, which is the position shown in Fig. 1. Withr the parts in this position, the angle of the inclined face 29 of the-leveling block is adjusted by means of screw 3|, so that the face 29 is approximately parallel to the face of lever 31 when the crank arm 5I is turned down to give the longest stroke. Now with the cam 40 in the same position and crank arm 5l turned up ward to give theshorter stroke, the bobbin will come to the same position, the difference in length of stroke all appearing at the top of the bobbin (with the heel 'of cam 45 against roller 45) to give the desired taper. Inasmuch as the pivot 31' ofthe lever 31 moves through an arc instead of through a plane parallel with the face of the lever, it is necessary to make some compensation for this slight arcuate movement. This requires that there shall be a slight deviation from the parallel between the face of lever 31 and the face 29 of the leveling block 23. This is easily ar- Jrived at by trial. and error and the face 29 is brought into proper position by adjusting the Screw) Il Y. with ,settinaproperiy made and ,the point of cam 45l bearing, against the roller 45 on all strokes of intermediate length between the longest and shortest, the bobbin will rise to It beseen that my structure makeswuse of only one oscillating lever 31 to transmit motion from the cam and that it dispenses entirely with the screw, rack` and gear arrangement hereto- `fore used. I believe that the idea of moving the 'binedwith the leveling block on the end of the chain rail slide. This structure permits a cam of reasonable size to be used.

While this mechanism has been particularly designed i'or use with bobbins having a, length of 6 or 7" with a 21/2" base and a 1%" head, it -will beseen that the mechanism may be readily adjusted for bobbins having other sizes.

It will beseen that the yarn is wound on in successive layers traversing the full length of the bobbin on the longest traverse with a gradual variation in the length of traverse to a minimum of about 11A" less than the full length of the bobbin. .The yarn is lled into the base of the bobbin and the variation'lin traverse all occurs .at `the top o1' the bobbin. 'I'his builds a bobbin which, when full, is uniform in diameter from the.

hase up to a distance of 1%" from the to`p with a taper from this point which narrows downto slightlyless in diametr than the top head of the bobbin. The ratio between cam speed and the speed of crank 5I which controls the stroke cycle should vary between 8 to 1 and 15 to l for best results on most yarns. Gears 55 and 53 are change gears in-the train driving the crank 6|. Alteration Ain the relative siz'es"of these gears makes it possible to change the ratio of cam speed It is' to speedof crank 5I over a wide range. 'better not to have .thecam speed an exact multime' of the speed of crank si. This is to atom bringing thetermination of strokes of the same length at exactly the same point on successive stroke cycles, which would have a tendency to produce a step eiect instead of ataper at the top of the bobbin.

'I'heleveling block or element 29 is of great iinpartance as will appear from the following:-

' Assume thatthe face29 of block 28 is vertical and -that lever 31' is vertical, or approximately so, at the center of its stroke. Assume then that the fulcrum or pivot 31B is raised by raising the pivot 36' of lever 3E, thereby producing a longer stroke of the lever 31 by reason of the fact that the roller 5U' acts against the lever 31 nearer `to its fulcrum 31S. This increase in stroke will be apparent at both ends of the arc through which the roller 38 swings and the horizontal traverse Y of block 28 and' chain 'rail 23, and in turn the vertical' traverse of the bobbin rail- It will be extended equally on` both ends of the traverse.

However, to get the wind which is required, it is necessary to have all the change at the top of thefbobbin to produce the'desired taperand to have the stroke always terminate at the same point at the base of the bobbin or, in other words,

when the point of the cam 40 is engaged with the roller. The leveling block 28 accomplishes this purpose when the angle of its' face 29 isset` as previously described, that is, with the face approximately parallel -to the face piatte il@ of lever` 31, when the cam t0 has its point invengagement Withthe rollerfi'. Two actions then'A take place simultaneously. Firstfthe increasing `length of the arc through which roli- 3B moves as the stroke lengthens would cause the base of the bobbin to move above-the level of ring i2.

Second, the angle of the face 2290i block 23 gives a drop or opposite movement to the bobbin rail' as roll Il moves up the face 29 at this angle. 'I'his second-action neutralizes the first action, Y the net result being that on all strokes, the base of the bobbin comes level with thering lI2 and 5 the change in the length of the traverse occurs all at the top of the bobbin `to produce the taper thereon. The` screw 3|, of course, secures this adjustment of the angle of face 29 of the leveling block'. 'I'he screw 21 is merely used for adjust- 10 ing the level of bobbin rail in relation to a ring I2 after the builder has been ,correctly adjusted so that it will bring the termination of all length strokes coincident with the positioning of the cam y4I! with its point against the roll 46 and give the 15 correct length of stroke. It will be noted that the face 29 is not exactly parallel with.the face` plate 39 and it is this slight deviation from ab- Y solute parallelism which compensates for the arc traversed by the pivot pin 31 as before stated.

In making these adjustments, the best procedure is as follows:

First, adjust the throw of the crank 5I for the desired length of taper; second, adjust the fulcrum 36 up or down until correct maximum g5 length of stroke has been obtained, always being careful to make a corresponding change in the length of connecting rod formed by the parts 61, 68 and 69, to keep the lever 34 in a horizontal position at the centerof the-stroke of crank "5I: 30

third, with cam 40 on pointset theangle of face 29 of leveling block 29so that the bobbin rail I 4 will reach the same lower level on both long and short strokes; fourth, level the'base of the bobbins to the ring rail .by means of the screw 21, 35', and if suilicient adjustment cannot be secured by -screw 21, then the lifter rod I1 may bemoved up Aand a certain adjustment of this leveling block and exceptfcr the fact that the ring .rail is movable and .the bobbin rail is stationary, the mechanism is substantially'the same as that illustrated in Figs. l to 3. In' the construction illustrated in Fig. 4, the face 29a of the leveling block 29a is so adjusted that it inclines toward the left- Vhand end of the machine, that is, tothe left 'of a Avertical plane and an angle of inclination opposite to the angle of inclination of th@ leveling 55 block 28 in Fig. 1. In Figa, the parts are shown Y with the heel of cam 40 bearing against the roller 4S, thus bringing the ringrail II to itsl lowest'l int with the relation between the ring rail II and the spindle rail i4 the same as in 60 l Fig. 1;. l i l Since the taper at the top of the bobbin is now obtained by th'e action of the traversing ring rail II and since in order to iill in at the base .of the bobbinit is necessary -to bring the lring rail II g5 level vwith the mbbin at thelower end of its traverse or with the heel ofthe cam til in engagement with the roller te, it is necessaryfto reverse the angle of the face 29 oi the block 2811. To

,obtain this result settings for taper and length of m stroke are made as before-described" Then withl the heel of cam Ml against roll 46 and the lever Sli in position to give the long stroke, the angle of face 2de isadjusted parallel to or appmximately parallel with face plate t9 of lever 81. With the 75,

cam in this position, the level of the'ring rail is checked on the short stroke and any correction necessary in the adjustment of the angle of block 28.L to compensate for arcuate movementof fulcrum 31a is made and then the ring rail Il is leveled to the base of the bobbin by means of jack screw 2l. It will be seen that the mechanism shown in Fig. 4 operates on the same principle as the mechanism shown in Fig. l.

It is to be understood that this builder motion may be applied to spinning, twisting or any other textile machine Where it is necessary to wind this type of package and that II, therefore, do not limit the application of this invention to spinning frames only.

This mechanism has been thoroughly tested and has beenin actual use for some time and no mechanical diiiiculties have been found.

It will be obvious that many changes might be made in the details of this mechanism without departing from the spirit of the invention as d efined in the appended claims.

What is claimed is:

1. In a spinning frame having a fixed rail and a movable rail, one carrying spinning rings and the other carrying spindles. a builder mechanism including a lever pivoted at one end, movement transmitting means between the free end of the lever and the movable rail, means operatively engaging directly with the middle of the lever and acting through rectilinear movement to continu' ously oscillate said lever, said means having a fixed stroke, and means to. repeatedly shift the lever longitudinally to thus vary the distance between the fulcrum of the lever and the point of application of the said oscillating means thereto.

2. In a. spinning i'rame having a xed rail and a movable rail, one carrying spinning rings and the other carrying spindles, a builder mechanism including a lever pivoted at its lower end, movenient transmitting means between the free end of the lever and the movable rail, means operatively engaging the middle of the lever and acting to continuously oscillate said lever, said means having a fixed stroke, and means for alternately raising and lowering the lever by alternately raising and lowering the pivotal Iulcrum of said lever to thus vary the distance between the fulcrum and ,the point of application of the oscillating 'means to the lever.

3. In a spinning frame havinga xdrail and a movable rail," one carrying spinning rings and the other carrying spindles, a builder mechanism including a lever pivoted at its lowerend, movement transmitting means betweenthe free end of the lever and the movable rail, 'means operatively engaging the middle of the lever and aeting to continuously oscillate said lever. said means having a fixed stroke, and means for alternately raising and lowering the lever by alternately rais- Y tively engaging the middle of the lever to continuously oscillate said lever, said means having s xed stroke. a lever pivotally supported intermediate its ends and at one end supporting the fulcrum for the lower end of and supporting the rst named lever, and means repeatedly shifting the opposite end ofthe second named lever to thus vary the distance between the fulcrum of the rst named leverfand the pointA of application of the oscillating means thereto.

5. `In a spinning frame having a fixed rail and a movable rail, one carrying spinning rings and the other carrying spindles, a builder mechanism including a lever pivoted at its lower end, movement transmitting meansbetween the free end of the lever and the movable rail, means operatively engaging the middle of the lever to continuously oscillate said lever, said means having a iixed stroke, a lever pivotally supported between its extremities and movable in a vertical plane, one end of said last named lever supporting 'the fulcrum for and supporting the first named lever, and an adjustable throw crank operatively coupled with the other en'd of the second named lever, and means for continuously rotating said crank.

6. Abuilder mechanism, including a reciprocatory chain rail, a vertically disposed lever pivu otally supported at its lower end and operatively engaging the chain rail, means engaging directly with a side of said lever and having rectilinear movementl thereagainst to oscillate it, and means constructed and arranged to 'alternately raise and lower the pivotal end of the lever with relation to the lever oscillating means.

7. A builder mechanism, including a reciprocatory chain rail, a vertically disposed lever pivotally supported at its lower endV and operatively engaging the chain rail, a continuously rotatable cam, means engaged by the cam and engaging the'middle of said lever to oscillate it, said cam engaged means having rectilinear movement in' the direction of lever movement and means constructed and arranged to alternately raise` and lower the pivotal end of the lever with relation to the point of application of power from said cam to the lever.

8. A builder mechanism, including a reciprocatory chain rail, a vertically disposed lever piv--,

otally supported at its lower end and operatively cam, means engaged by the cam and engaging the middle of said lever to oscillate it, means constructed and arranged to alternately raise and lower the pivotal end of the lever with relation to the point of application of power from said cam to the lever, said means including a lever pivoted between its ends for vertical movement and pivotally connected to the lower end'of the first nemed lever, and means engaging said second named lever'to continuously oscil ate it.

/9. A builder mechanism inclu \g a reciprocatory chain rail, a. slide carried reby, a ver--v tically disposed lever engaging at o e end with the slide, a cam, operative connectio between the cam and lever causing the lever oscillateas the cam rotates, the lever having ding engagement with the operative 'connec ons, the connections having rectilinear moveme between .the cam andlever and meam for varying the distance between the point of application of power to the lever by said cam and the fulcrum oi the lever by shitting the lever and the Iulcrum.

' te its ends and at 'one cam means` for oscillating'saidiirst named lever and including -an element bearing at one n t against the nrst named lever, and means for'c tantly oscillat-- ins the second named lever to al ,ately increase ment in a verticalplane and pivotally connected or diminish the distance between' his msi-um of the rst named lever and point. of app ation of power to the iirst 4named lever from said \m. 'i 11. A builder'mechanism-including a reciprocatory chain rail, a slide carried thereby, a mem-- ber mounted on the slide and having a vertical face. a vertically disposed lever engaging at its upper end'with thevertical face of said member, a lever pivoted intermediate its ends and at one end pivoted to the lower end of the iirst named lever, constantly operated cam meansfor cscillating said first named lever and including an element bearing at one point against the iirst named lever, means for constantly oscillating the second named lever to alternately increase or diminish the distance'between the fulcrum of therst named rlever and point of application of power to the rst named lever from said cam, and including an adjustable throw crank and a connecting rod between the wrist pin of said crank fand the adjacent end of the second named lever.

l2. A builder. mechanism, including a recipro- \cati/ng chain rail, a slide carried thereby, a leveling block lpivotally mounted upon the 'slide and extending upward therefrom, means" for adjustably tilting the leveling block, a lever having a roller at its upper e d engaging the face of said leveling block, a second lever pivoted for movev at one end tothe Jlower end of the iirst named lever to constitutes. fulcrum therefor, means for constantly oscillating the iirst named lever, in-

cluding a membervhaving rolling contact with the face of the iirst named lever, and means for constantiycscillating the second named lever at a. relative ly slow s ped to thus' alternately increase and decrease the distance between the fulcrumof the iirst named lever and said point of contact with the leveroscillating means. 13. A builder mechanism, including a reciprocating chain raiL'a slide carried thereby, a leveling block pivotally mounted upon theslide and extending upward therefrom, means for adjustably tilting the leveling -block, ya lever having. a roller at its upper end-.engaging the face of said leveling 'blocka second lever pivoted for movement in a vertical plane 'and pivotally connected at'one end. to the'lower end of therst named le'ver to constitute a fulcrum therefor, means for constantly oscillating the first namedlever i'nv cluding a memberhaving rolling contact with the face oi the first named lever, means for constantly oscillating Athe second named lever at a relatively slow speed to thus alternately increase and decrease the distance between the fulcruni of the ih'st' named lever and said point of contact with the lever oscillating means, including an adjustable throw crank, a longitudinally adjustable connecting rod betweenthe orankand the adjacent end of the second named lever and a vertically adjustable pivot for the second named lever.

is.' A builder mechanism, including a reciprocatory chain rail, a slide carriedthereby, a levelving block pivotally mounted upon the slide and.

extending upward therefrom, adjustable lmeans for tilting the leveling'block, a vertically extending lever having rolling contact at its upper end aisance with the` tace oi the leveling block. a longitudinally extending lever pivoted' tothe lower end of the vertical leverand constituting a fulcrum l therefor, means for vertically adjusting the pivot upon which the second named lever rocks, a con- 5 tinuously driven crank. a vconnecting rod between -thel crank and the adjacent end of, the second named lever, the connecting rod being longitudinally adjustable to increase or decrease its length, and means for oscillating the iirst named lever, including a slide. a roller the vadjacent face of the nrst named lever and having \a mounting adjustable in any-one of'a plurality of vertical positions iii said slide, and a continuously driven cam operatively said slide to reciprocate it and osciliate the iirst named lever, 'the second named lever acting to slowly but continuously increase or diminish the distance between the fulcrum of the first named lever" and the rollerA engaging the face oi.' the 20 first named lever. f

15. 7A. spinning frame having a fixed rail and a' movable rail, one carrying spinning rings and the other carrying spindles, a builder mechanism including a chain rail, chains carried by the rail g5 and operatively engaging the iirst named movable rail to raise or lower itl as the chain rail is reciprocated, a leveling block operativelypivoted upon lthe chain rail and extending upward therefrom and having a rearwardly extending arm an and a downwardly inclined face, a screw passing v'througlr said arm whereby the leveling block may be tilted to vary'the inclination oi' its face with reference to a vertical plane, a longitudinally extending lever pivoted intermediate its sa ends, a vertically extending lever iulcrumed upon one. extremity oi' .the iirst` named lever and hav-vV ingrolling contact at its Aupper end with the in-w clined face of said leveling block, alconstantiy operated cam, a slide associated therewith, a 4o roller bearing against the adjacent face of the second named lever and having a moimting provided with a screw-threaded shank engaging said slide, and means constructed and arranged to slowly but continuously oscillate the flrst named 4,5 lever to thus increase or diminish the distance\ between ythe fulcrum ol' the second named lever and point of contact of the roller therewith. Y

16. A-builder'motion, including a reciprocating. chain railhavlng means whereby it may be oper- .atively connected to -a builder rail, a leveling element' operatively pivoted on the rail and having` a work face, means i'or tiltably the element t'o bring said face into predetermined angular relation to a vertical plane, a vertically disposed lever engaging at its upper end against the i'ace of the element and pivoted at its lower end, constantly operated means for oscillating the lever to thereby oscillate the chain rail through application of pressure through ythe upper end of the lever to said face, and constantlyfoperated` means for slowly and continul ously increasing the throw ofthe lever and then; decreasing said throw, said last-named 'means operating at a speed considerably less than the 65 speed of said lever oscillating means.

17. A builder motion, including a reciprocating chain rail having means whereby it may be` operatively connected to a vertically reciprocable builder rail, a slide mounted on the chain rail,

predetermined angular relation to a verticalys ment and pivoted at its lower end, constantly operated means engaging the intermediate portion of said lever to oscillate it, said means having a uniform stroke, and constantly operated means for slowly and continuously lifting the lever relative to the oscillating means and then lowering the said lever relative thereto to thus change the stroke of the free end of the lever, said last-named means operating at a speed which is a fraction ofthe speed of the lever oscillating means.

18. A builder motion, including a vertically movable builder rail, a chain rail having means whereby it may be operatively connected to the builder rail to reciprocate it, a bodyv on the chain rail and having a working face, a vertically disposed lever pivotally supported at its lower end and at its upper end engaging said face, constantly operated means engaging the intermediate portion of the lever and constructed and arranged to slowly oscillate it, constantly operated means operated at a fraction of the speed of the first-named means constructedand arranged to slowly raise and lower the lever relative to its point of engagement with the lever oscillating means to thereby increase or decrease the stroke of the lever and o! the chain rail, and means constructed and arranged to cause the movable builder rail on all strokes to lower to the same point regardless of the change in the length of the stroke of the lever and chain rail.

19. A builder motion, including a vertically movable builder rail, a longitudinally reciprocable chain rail, means operatively connecting the chain rail to the builder rail to vertically reciprocate the latter, an element on the chain rail having an upwardly extending face, a vertically disposed lever pivotally supported at its lower end and at its other end engaging said face, a constantly operating cam, a slide operatively engag- .ing said cam and engaging against the intermediate portion of the lever whereby the rotation of the cam will osclllate the lever, a longitudinally extending lever pivoted intermediate its ends and at one end pivotally supporting the lower end of said vertically disposed lever. a crank, an operative connection between the crank and that end of the longitudinally extending lever remote from the vertically extending lever, means for slowly rotating the cam, and means for rotating the crank at a fraction of the speed of the cam.

GUY E. BRANCH. 

